Home / Chicopee / 30 December 2017
Chicopee
United States · 30 December 2017
← 29 December 201731 December 2017 →
Average
-13.8°C
low -20.6°C · high -8.8°C
Rainfall
0.8mm
dry day
Wind
2m/s
daily average
Humidity
79.7%
daily average
Cloud
72%
cover
Pressure
1018hPa
daily average
The temperature ranged from -20.6°C around 23:00 to -8.8°C around 15:00. Rain was recorded across 4 hours, from around 13:00 to 16:00 (0.8mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
2th percentile
Low temperature
1th percentile
Rainfall
59th percentile
Wind
23th percentile
A percentile of 100 means this was the hottest/wettest/windiest of the comparable days on file; 50 is right in the middle. This window's average temperature was 0.3°C, versus -13.8°C on this specific day.
Sun & daylight
Sunrise
07:18
Sunset
16:26
Day length
9h 8m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/New_York.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 05:00 | -17.3°C | -23.1°C | 0 | 3.2 | W | 69 | 1023 |
| 01:00 | 06:00 | -15.2°C | -20.9°C | 0 | 3 | W | 66 | 1023 |
| 02:00 | 07:00 | -15.8°C | -21.2°C | 0 | 2.5 | WSW | 69 | 1022 |
| 03:00 | 08:00 | -16.4°C | -21.5°C | 0 | 2.2 | WSW | 69 | 1022 |
| 04:00 | 09:00 | -15.8°C | -20.7°C | 0 | 1.9 | SW | 71 | 1022 |
| 05:00 | 10:00 | -16.7°C | -21.4°C | 0 | 1.5 | SW | 73 | 1021 |
| 06:00 | 11:00 | -16.7°C | -21.4°C | 0 | 1.5 | SSW | 74 | 1022 |
| 07:00 | 12:00 | -16.7°C | -21.3°C | 0 | 1.5 | SSW | 75 | 1021 |
| 08:00 | 13:00 | -16°C | -20.6°C | 0.01 | 1.5 | S | 75 | 1021 |
| 09:00 | 14:00 | -15.9°C | -20.3°C | 0.03 | 1.2 | S | 79 | 1020 |
| 10:00 | 15:00 | -13.5°C | -17.8°C | 0.06 | 1.1 | S | 78 | 1020 |
| 11:00 | 16:00 | -12.1°C | -16.6°C | 0.08 | 1.6 | S | 77 | 1019 |
| 12:00 | 17:00 | -10.9°C | -15.8°C | 0.09 | 2.3 | SSW | 79 | 1017 |
| 13:00 | 18:00 | -10.2°C | -15.6°C | 0.11 | 2.9 | SSW | 80 | 1015 |
| 14:00 | 19:00 | -9.3°C | -14.7°C | 0.1 | 3 | SSW | 79 | 1014 |
| 15:00 | 20:00 | -8.8°C | -13.8°C | 0.12 | 2.5 | SW | 79 | 1013 |
| 16:00 | 21:00 | -9°C | -12.9°C | 0.12 | 1.1 | SSW | 86 | 1013 |
| 17:00 | 22:00 | -9°C | -12.7°C | 0.05 | 0.8 | SE | 81 | 1014 |
| 18:00 | 23:00 | -10.1°C | -14°C | 0.01 | 0.9 | SE | 85 | 1014 |
| 19:00 | 00:00 | -10.7°C | -14.5°C | 0 | 0.8 | SW | 88 | 1014 |
| 20:00 | 01:00 | -12.1°C | -16.4°C | 0 | 1.5 | W | 93 | 1014 |
| 21:00 | 02:00 | -13.8°C | -18.9°C | 0 | 2.5 | W | 94 | 1014 |
| 22:00 | 03:00 | -18.6°C | -24.3°C | 0 | 3.2 | W | 96 | 1015 |
| 23:00 | 04:00 | -20.6°C | -26.6°C | 0 | 3.4 | W | 97 | 1015 |
Nearby cities
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Data source & coverage — ERA5 reanalysis, 2016–2025 (10 years)details
- Source
- ERA5 reanalysis, accessed via the Copernicus Climate Change Service (C3S) Climate Data Store
- Data type
- Reanalysis — a physically consistent reconstruction combining a forecast model with historical observations, not a live station reading or a forecast
- Coverage
- 2016–2025 (10 years) for United States
- Location
- Chicopee — 42.250°, -72.500°, ERA5 grid cell center, 14.3 km from requested point
- Time zone
- America/New_York
- What's shown here
- The hourly and daily record for 30 December 2017 specifically — not a monthly average. See the Chicopee climate overview for typical conditions.
- Spatial resolution
- 0.25° (~25 km) distributed grid — ERA5's native model resolution is finer; this is the publicly distributed regridded product
- Version / refreshed
- Methodology v2026.07 · data last refreshed December 31, 2025
- Limitations
- A model reconstruction, not a station observation — hyper-local extremes (a single storm cell, an urban heat pocket) can differ from a nearby gauge. See the full methodology.
- Attribution
- Generated using Copernicus Climate Change Service information
Cite this data
PastClimate (2026-07-20). Historical climate data for Chicopee, United States (42.25°N, 72.50°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Chicopee, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Chicopee, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Chicopee, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.